central scotoma

Last reviewed 06/2019

Central scotoma is an area of depressed vision that corresponds with the point of fixation and interferes with central vision. It suggests a lesion between the optic nerve head and the chiasm.

Possible causes include:

  • multiple sclerosis - which may cause unilateral or asymmetrical bilateral scotoma
  • methyl alcohol - which may cause symmetrical bilateral scotoma
  • nutritional causes - which may be due to, e.g. alcohol or tobacco amblyopia, B12 deficiency
  • vascular lesions - which may cause unilateral scotoma
  • gliomas of the optic nerve - this may cause unilateral scotoma
  • simple glaucoma - which may initially cause an off-centre scotoma